Effects of potato virus YNTN infection on gas exchange and photosystem 2 function in leaves of Solanum tuberosum L.

Title:

Effects of potato virus YNTN infection on gas exchange and photosystem 2 function in leaves of Solanum tuberosum L.

Creator:

Zhou, Y. H., Peng, Y. H., Lei, J. L., Zou, L. Y., Zheng, J. H., and Yu, J. Q.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:790fef40-5e6f-4b89-b1fd-57e7fbe04b80
uuid:790fef40-5e6f-4b89-b1fd-57e7fbe04b80
issn:0300-3604
doi:10.1023/B:PHOT.0000046161.16215.dd

Subject:

chlorophyll fluorescence, intercellular CO2 concentration, net photosynthetic rate, photochemistry, photosynthetic electron transport, potato, potato virus Y, quantum yield, and stomatal conductance

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Photosynthetic responses of potato (Solanum tuberosum L. cv. Chunzao) were examined during potato virus Y (PVYNTN) infection. PVYNTN infection significantly reduced net photosynthetic rate and stomatal conductance, but had little influence on intercellular CO2 concentration. As the disease developed, the maximum carboxylation velocity of ribulose-1,5-bisphosphate carboxylase/oxygenase and the maximum electron transport rate contributing to ribulose-1,5-bisphosphate regeneration gradually decreased, followed by substantial reductions in the relative quantum efficiency of photosystem 2 (PS2) electron transport, the efficiency of excitation energy capture by open PS2 reaction centres, and photochemical quenching, but not in sustained photoinhibition. Thus PVYNTN depressed photosynthesis mainly by interfering with the enzymatic processes in the Calvin cycle which resulted in a down-regulation of electron transport. and Y. H. Zhou ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

417-423

Source:

Photosynthetica | 2004 Volume:42 | Number:3

Harvested from:

CDK

Metadata only:

false